Gem-setting.



No. 634,567. Patented Oct. :0, lass,

F. A. BALLOU & c. A. BURDETT.

an ssmma.

(A $1imion filed Apr. 27. 1 399.

(No Model.)

UNITED STATES" PATENT .IOFFICE. I

FREDERICK A. BALLOU AND CHARLES A. BURDETT, OF PROVIDENCE, V

RHODE ISLAND SAID BURDETT ASSIGNOR TO SAID BALLOU.

GEM-*SETTING.

SPECIFICATION formingpart of Letters Patent No. 634,567, dated October 10, 1899. Application filed April 27, I899. $erial No. 714,626. (No model.)

To all whont it may concern:

Be it known that we, FREDERICK A..BAL Lou and CHARLES A. BURDETT, citizens of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Gem-Settings, of which the following is a specification, reference being had thereinto the accompanying drawings.

Like letters indicate like parts. v

Figure 1 is an enlarged view,- in side elevation, of a wire for the manufacture of a stickpin to be provided with our improved gemsetting. Fig. 2 is an enlarged view, in side elevation, of said wire after one end thereof has been reduced in diameter and grooved. Fig. 8 is an enlarged view, in side elevation, showing said reduced and grooved end of the wire bent to form a circular loop, within which loop the gem is set. Fig. i is the same as Fig. 3, except that it shows a collar or tube put on over the parts of the wire which are in contiguity. Fig. 5 is an enlarged view of the gem in side elevation and of the gem-setting in cross-section on line m not Fig. 3. Fig. 6 is a plan view of the finished stick-pin provided with a gem and our improved gemsetting.

Our invention relates to gem-settings for pins and similar articles; and it consists of a.

wire having one end pointed and the opposite end reduced in diameter and grooved on one side and bent to form an integral loop, the exand near one end thereof, as seen at g in Fig. 7

2, and a groove is rolled in or bur-red, as indicated by the dotted line in said figure. The

end g is bent into the circular loop shown in Fig. 3 to inclose the gem B, and the extremity 1 of said part g is lapped over and lies straight along and against the wire A, as seen in said figure at h. A short tube, collar, or sect-ion of hollow wire 0, having an inner diameter sufficiently large to inclose the wire A and said straight portion h of the reduced wire g, is slipped on over the wire A and straight lap it until its forward end abuts the loop 9, as shown in Fig. 4. The gem B is thus secured in place within the grooves of the loop g, as seen in Fig. 5, and bya swaging operation in said reducing-machine the collar 0, wire A, and lap h are all hammered down to the shape illustrated in Fig. 6.

In the methods of manufacture heretofore employed in making such pins solder has gen erally been used, thereby softening the stock and impairing the temper thereof. As we entirely dispense with the use of solder in the manufacture of these pins, the temper, stifi ness, and strength of the pins are not impaired, but rather increased. This is especially important in the manufacture of goldplated goods.

I The setting produced as above described is smooth and has no projections or points, and therefore wears well, does not catch into the fabric, and holds the gem securely in position.

We claim as a novel and useful invention and desire to secure by Letters Patent- In combination with a gem, a pin having one end pointed and the other end reduced in diameter, and grooved on one side and bent to form an integral loop with said groove on its inner surface, the extreme portion of said reduced end extending as a lap straight along and in contact with the pin, a collar, surrounding the pin and lapped portion thereof' FREDERICK A.'BALLOU. CHARLES A. BURDETT Witnesses:

WARREN R. PEROE, HOWARD A. LAMPREY. 

